1) The reaction with Ba is likely to form a complex alcohol compound, potentially with the Ba replacing one of the H atoms in the chain.

2) The reaction with KOH is likely to result in the saponification of the ester group in the compound, resulting in the formation of the corresponding alcohol and potassium carboxylate salt.

3) The reaction with H2 is likely a reduction reaction, leading to the formation of a saturated compound with all C-C bonds as single bonds, potentially resulting in the formation of a saturated alcohol.